Comparing ingredient and biological activity from all extracts, there was no correlation between total flavonoid or GABA content with anxiogenic or anticonvulsant effects.
Amino acids, including GABA were prominent in the total extract and amino acid extract, and virtually absent in the amino acid reduced extract.
GABA was the dominant amino acid in all extracts (Fig.
Direct GABA agonist effect of Passiflora extract on hippocampal pyramidal cells
Flavonoid modulation of ionic currents mediated by GABA A and GABA C receptors.